From 0f843c6ac318bb3ea7b63437b66dd39d8f01b088 Mon Sep 17 00:00:00 2001
From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Date: Tue, 21 Jan 2014 15:49:45 -0800
Subject: [PATCH] mm/rmap: factor nonlinear handling out of try_to_unmap_file()

To merge all kinds of rmap traverse functions, try_to_unmap(),
try_to_munlock(), page_referenced() and page_mkclean(), we need to
extract common parts and separate out non-common parts.

Nonlinear handling is handled just in try_to_unmap_file() and other rmap
traverse functions doesn't care of it.  Therfore it is better to factor
nonlinear handling out of try_to_unmap_file() in order to merge all
kinds of rmap traverse functions easily.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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